Electric heating appliance



Nov. 20, 1923. 1,474,483

c. A. LAlsE ET AL ELECTRIC HEATING APPLIANCE Filed June 2s. 1921 2 sheets-Sheet 1 INVENTORRS.`

Nov.2,l923. L474A83 i c. A. LAlsE E'r AL ELECTRI C HEAT ING APPLIANCE Filed June 28. 1921 2 sheetsfsheet 2 INVENTORS:

@EME/V5 fl L17/5E [W7 HABER/zw;

@hay ATTORN Patented Nov. 20, 1923.

UNITED STATES 1,474,483 PATENT OFFICE.

.oLEMENs A.- LAIsE, or WEEHAWKEN, AND ALBERT J. GALLAGER, or WEST ommen' NEW JERSEY.

ELECTRIC HEATING APPLIANCE.

Application led June 28, 1921.

To all whom may concer/L:

Be it known that we, CLEMENS A. LAIsE and ALBERT J. GALLAGER, citizens of the United States, and residents, respectively, of

W eehawken,-Hudson County, State of New Jersey, and West Orange, county of Essex, and State of New Jersey, have jointly invented certain new and useful Improvements in Electric Heating Appliances, of which the following is a specification.

This invention relates to an improved structure comprising co-operatively arranged connected containers, one for the installation of a separable electric heating element and the other for receiving the things to be either directly or indirectly heated.

The principal object of the invention 1s to provide an improved container in which the various necessary elements are to be separately installed in co-operative relation with each other.

Another object of the invention is to provide a construction in the operation of which a means of heating` by electricity will be produced which is most eflicient in operation yand economical of manufacture.

Cther objects will appear-from the subjoined specifications and claims.

The uses to which our invention may be put are very extensive as structures embodying our invention are adapted 'for electrical heatingv purposes in the home', laboratory, hospital and for industrial and commercial purposes.

Referring to the drawings in lwhich the same reference character indicates (the ,same part in the several views:

Fig. 1 is a view in side elevation showing the operation thereof during one of the uses 40 to which it is adapted to be put.

Fig. 2 is a plan of the structure shown in Fig. l, the heating element and cover being removed.

Fig. 3 is a section on line 3-3 of Fig. 1.

Fig. 4 is a view in perspective elevation of a form of removable basket, the walls of which may either be solid or perforated as shown.

Fi 5 is a sectional View of the basket showing a milk bottle therein.

Fig. 6 is a view in elevation partly broken awayof another structure embodying our invention.

Fig. 7 is a. section on line 7-7 of Fig. 6.

Figs. 8 and 9 are views in perspective of Serial No. 480,962.

still other structures embodying our invention.

In the drawings the curved container A is so shaped as to form a receptacle B which latter is adapted to receive and hold the major portion of the gas, fluid, liquid or other material to be heated, and adjacent to the main receptacle B is a heating chamber C of smaller capacity, which chamber is an integral part of the main structure A and is connected with the chamber C by a restricted opening l) to permit direct circulation and a free passage between the heating chamber and the main chamber or receptacle B of the combined structure.

As clearly shown in the drawings, the proportions` kof the heating chamber are relatively small in comparison with those of the main chamber of the receptacle, although these proportions will obviously vary iaccoi-ding to the particular design and type of heating.

The preferred device consists of the usual coffee pot shape the walls of which in our structure recede oi' narrow towards the handle in order to form therebetween the heating chamber for the installation of the electric heating unit E which may be of any suitable type, but we recommend the use of the non-corrosive, non-metallic immersion electric heating unit as covered in Patent N o. 1,365,978 granted to Albert J. Gallager on January 18, 1921.

It is obvious that the walls of the connecting chambers B and C forming the coffee pot construction may be of any desirable contour, that is', the walls may be on curved or angular lines.

lVhen the structure is used for the making of hot beverages or for heating liquids desired to be poured directly from the structure, a spout 10 may be added with the usual strainer 11 placed adjacent thereto. A cover Q0 and handle ".1 are also used-when desired in structures similar to those shown in Figs. 1 and 6, but these elements are not necessary in such a structure, as shown in Fig. 8.

We also provide for insertion in the main chamber B a removable basket K such as shown in Fig. t the walls of which may be either lsolid or perforated. The perforated structure is used to hold in fixed position anything to bevcooked so that the position of the thing Vacted upon may be controlled and it may not come in direct contact with the heater. A basket having solid walls is used to hold liquids such as soup, acids or milk which it is desired to heat.

As shown in Fig. G, our invention may be used as a sterilizing a. paratus in which several baskets K may e installed, these baskets being adapted to hold the instruments T requiring sterilizing.

Another structure embodying-our invention consists of a tank-like element having the heating chamber C and C2 placed at t-he ends of the tank, the main chamber for holding the things to be heated or cooked or sterilized, formlng the remainder of the structure.

It has been found desirable to so design the wall of the heating chamber that it will be substantially unidistat from the surface of the electrical heating element. This will result in the production of a more rapid and more eiicient circulation of the heated water.

The container may be constructed of metal, porcelain, enamel ware, heat resisting glass, or any other suitable material. For most purposes we recommend the use of aluminum, enamel ware or heat resisting glass.

In the installation of our device the heating element will be preferably either air or water. Obviously, water will be largely used. In such event, the proper amount of water is poured into the structure and it will fill up to the proper height in both chambers. The -electric heating unit is then installed in its chamber and comes in direct contact with the heat transmitting medium, and as the Walls of the chamber are substantially uni-distant from a substantial portion of the surface of the heating unit, a rapid and efiicient circulation of the heating medium is provided.

In the operation of the device, the heat transmitting medium, being confined in the heating chamber in contact with the heating element, israpidly brought to a high temperature due to the localization of the heat in the heating chamber and it is thereby impelled upwards and outwards into the main body of the receptacle, as clearly illustrated by the arrowsin Fig. 1.

As above stated, owing to the special construction of this container a more rapid circulation and a higher degree of conduction of heat throughout the heat transmitting medium is obtained, thereby improving the heating efiiciency since the heat losses by radiation are reduced.

To recapitulate, concerning the uses of structures embodying our invention, the device shown in Fig. l may be used for heating any uid such as water, milk or acid. It is particularly desirable for home use in this form because of thev rapid circulation obtained-.causing the hot fluid to rise rapidly along the sides of the heating tube and move across thc upper surface of the fluid to the spout 10. By this means a small quantity of hot liquid may be very rapidly obtained and poured out.

The removable basket K may be inserted in the larger section or main cavity B ofthe combined device A. When the walls of this basket are solid it may be surrounded by a small quantity of water which acts as a heat transmitting medium and maintains a proper level around the heatingr element T; thus this structure may bc use to sterilize milk, heat liquid foods and for other cooking purposes.

When the walls of the basket K are perforated it may be used for boiling ground coiiee or eggs or it may be used as a sterilizing basket in which to place the milk or other bottle, for either' sterilizing or heating. This basket may also be used with the receptacle dry, for dry heat sterilization, and this ensures an even distribution of the heat from the electrical heating element ll around the substance or article to be heated. which when that article is glass, tends to prevent the cracking thereot.

Fig. 6 shows the device inthe form suitable for small sterilizing units for physicians, dentists and barbers. In this case no spout is necessary and the chamber B preferably contains one or more gauze baskets K into which the tools or instruments T to be sterilized may be placed.

In Fig. 8 there is illustrated another container which is not circular in shape but which embodies the same invention. In this case the main container within which may be placed a basket K is oblong and the chamber to beI heated has small heatin chambers C and C2 attached to' it at caci end in a similar manner as heretofore described,thereby producing the same heating ellects.

Instead ot having the heating chambers placed at the side, such chambers may be placed at the bottom, as shown in Fig. 9, in which case the heating element will have to be hermetically sealed to the chamber or permanently fixed therein so as to provide an air and water tight structure.

For many home applications, the metal containers are preferable but for medicine and laboratory work, glass (especially heat resisting such as pyrex glass) containers should be used. Such units may also be efficiently used in laboratories for vaporization or heating of chemicals, alkalis and acids, also for crystallizing out salts, etc.

.Since the Gallager electric heating element above referred to is non-corrosive and non-metallic, any chemicals that may be used will not attack the same.

Owing to the construction of our improved container, the respective spaces of the heated, and a smaller chamber integrally heating and heated chambers are used veryadvantageously, in that the heating chamber is at the side of -and apart from the main chamber the space of the latter is such as to give a maximum eiiciency.

As changesv of construction could'be made within the scope of my invention, it is intended that all matter contained `in the above description or shown in the accompanying drawings be'interpre'ted as illustrative and not in a limiting sense.

Having thus described our invention what we claim as new and desire'to secure by Letters Patent is l. A heating appliance which comprises a chamber adapted to receive an object to be heated, and a heating chamber connected to the heat receiving chamber in such a manner as to V permit the free circulation of fluid 'through said chambers, said heating cham-L ber being arranged to receive `an electric heater.

2. A heating appliance which comprises a chamberadapted to receive an object to rbe heated, and a smaller chamber integrally connected to said heat-receiving chamber and arranged to permit free, circulation of fluid through said chambers, said smaller chamber being arranged to receive an electric heater.

3. Aheating appliance which comprises a chamber adapted to receive an object to be connected with said heat-receiving chamber in such manner as to permit the free circulation of fluid through said chambers, said smaller chamber being adapted to receive a heating element in' a position substantially unidistant from the walls of said chamber.

4. A heating appliance which comprises a chamber adapted to receive an object to be heated, a basket in said chamber and a smaller chamber connected to said heatreceiving chamber to permit the free and continuous circulation of fluid `through said chambers, said smaller chamber being adapted to receive an electric heatin element.

45. A heating appliance whic comprises a chamber adapted to receive an object to be heated, a basket in said chamber for holding said object, and a smaller chamber,

`an electric heating element therein, said smaller chamber being connected tot-:said heat-receiving chamber to permity the continuousv circulation of fluid to and from said chambers and intocontact with said basket and said electric heating element.

6. An electric heating appliance which comprises a larger chamber and a smaller chamber positioned at the side of said larger chamber and connected thereto. by means of a passageway, said smaller chamber being adapted to receive an electric heating element, thewalls of said smaller chamber for a substantial portion thereof being unidistant from said electric heating element in a horizontal plane, the said two chambers being so arranged as to permit continuous circulation of fluid therethrou h.

7. Agn 'electric heating app iance which comprises a larger chamber and a smaller chamber positioned at the side of said large: chamber and connected thereto by means of a vertical passageway, said smaller lchamber being adapted to receive an electric heating element in a substantially vertical position, the walls of said smaller chamber for a substantial portion thereof being uni-distant from-said electric heating element in a horizontal plane.

8. A heating appliance which comprises a chamber adapted to receive an object to be heated, a smaller chamber connected to said heat-receiving chamber to permit the circulation of fluid through said chambers, said smaller chamber being adapted to receive; an electric heating element, a spout on .said larger chamber and a handle positioned on said smaller chamber.

9. A heating appliance which comprises a larger chamber and a smaller chamber connected therewith to permit the circulation of fluid from one chamber to the other, an electr-ic heating element in said smaller chamber anda number ofbaskets in said larger chamber, said baskets bein of va form to substantially fill said larger c amber when in assembled position and permit the circulation of fluid in contact with each basket.

.10. A heating appliance which comprises a container having walls shaped to form two chambers having a' vertical connecting passageway, a basket' for the reception of articles to be heated in one of said chambers and an electric heating element suspended .from the top of the other chamber. in a vertical position substantially uni-distant from the walls of said chamber. i

In witness whereof we have hereunto set our hands at the borough of Manhattan, city, county, and State of New York, this 27th day of June, 1921. n v

' CLEMENS A. LAISE.

ALBERT J.`GALLAGER. 

